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(11) | EP 2 267 277 A3 |
| (12) | EUROPEAN PATENT APPLICATION |
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| (54) | Annulus filler and method of mounting the annulus filler to a rotor disc of a gas turbine engine |
| (57) There is disclosed an annulus filler (21) for mounting to a rotor disc (22) of a
gas turbine engine and for bridging the gap between two adjacent blades (25) attached
to the rotor disc. The annulus filler comprises a first part (20) which is connectable
to the rotor disc between the positions of said adjacent blades, preferably before
the blades are connected to the rotor disc. The annulus filler also comprises a separate
second part (38) which is configured for engagement with the first part after the
adjacent rotor blades have been connected to the rotor disc. The filler is characterised
in that said first part has, in transverse cross-section, a pair of spaced-apart and
generally radially oriented arms (26) resiliently biased towards an installation configuration
in which it is spaced from each said blade by a respective clearance gap (G), and
an operational configuration in which it contacts each of said blades. Engagement
of the second part with the first part is effective to urge the first part from said
installation configuration to said operational configuration and thus into contact
with said blades. The first part may have at least one mounting region for connection
to the rotor disc and be configured to allow, in said first step of said procedure,
the or each mounting region to remain visible from a radially outer viewpoint. A method
of mounting an annular filler to a rotor disc of a gas turbine engine is also disclosed.
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